2015 Lexus CT200h change key battery

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CT200h_OM_OM76174U_(U)4-2. Driving procedures
■Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 minutes or ON mode (the
hybrid system is not operating) for more than an hour with the shift position in P, the
power switch will automatically turn off. However, this function cannot entirely prevent
the 12-volt battery discharge. Do not leave the vehicle with the power switch in ACCES-
SORY or ON mode for long periods of time when the hybrid system is not operating.
■Sounds and vibrations specific to a hybrid vehicle
→
P. 6 7
■Electronic key battery depletion
→P. 1 0 3
■When the ambient temperature is low, such as during winter driving conditions
When starting the hybrid system, the flashing time of the “READY” indicator may be
long. Leave the vehicle as it is until the “REA DY” indicator is steady on, as steady means
the vehicle is able to move.
■Conditions affecting operation
→ P. 115
■Note for the entry function
→P. 116
■If the hybrid system does not start
The immobilizer system may not have been deactivated. ( →P. 7 3 )
Contact your Lexus dealer.
■When the power switch indicator flashes in amber
The system may be malfunctioning. Have the vehicle inspected by your Lexus dealer
immediately.
■If the “READY” indicator does not come on
In the event that the “READY” indicator does not come on even after performing the
proper procedures for starting the vehicle, contact your Lexus dealer immediately.
■If the hybrid system is malfunctioning
→ P. 5 3 7
■If the electronic key battery is depleted
→P. 5 0 2
■Operation of the power switch
●When operating the power switch, one short, firm press is enough. If the switch is
pressed improperly, the hybrid system may not start or the power switch mode may not
change. It is not necessary to press and hold the switch.
●If attempting to restart the hybrid system immediately after turning the power switch off,
the hybrid system may not start in some cases. After turning the power switch off,
please wait a few seconds before restarting the hybrid system.
■Automatically P position selection function
→P. 1 6 5
■When the shift control system malfunctions
The power switch will not be able to be turned off. In such a case, the switch can be
turned off after applying the parking brake.
Have the vehicle inspected by your Lexus dealer immediately.

CT200h_OM_OM76174U_(U)
1714-3. Operating the lights and wipers
4
Driving
■Headlight control sensor
■Automatic light off system
●When the headlights come on: The headlights and tail lights turn off 30 seconds after a
door is opened and closed if the power switch is turned to ACCESSORY mode or
turned off. (The lights turn off immediately if on the key is pressed after all the doors
are locked.)
●When only the tail lights come on: The tail lights turn off automatically if the power
switch is turned to ACCESSORY mode or tu rned off and the driver’s door is opened.
To turn the lights on again, turn the power switch to ON mode, or turn the light switch off
once and then back to or .
■Automatic headlight leveling system (if equipped)
The level of the headlights is automatically adjusted according to the number of passen-
gers and the loading condition of the vehicle to ensure that the headlights do not inter-
fere with other road users.
■12-volt battery-saving function
In order to prevent the vehicle 12-volt battery from discharging, if the headlights and/or
tail lights are on when the power switch is turned off the 12-volt battery saving function
will operate and automatically turn off all the lights after approximately 20 minutes.
When the power switch is turned to ON mode, the 12-volt battery-saving function will be
disabled.
When any of the following are performed, the 12-volt battery-saving function is canceled
once and then reactivated. All the lights will turn off automatically 20 minutes after the
12-volt battery-saving function has been reactivated:
●When the headlight switch is operated
●When a door is opened or closed
■Customization
Settings (e.g. light sensor sensitivity) can be changed.
(Customizable features: →P. 5 9 1 )
The sensor may not function properly if an
object is placed on the sensor, or anything that
blocks the sensor is affixed to the windshield.
Doing so interferes with the sensor detecting
the level of ambient light and may cause the
automatic headlight system to malfunction.
NOTICE
■To prevent 12-volt battery discharge
Do not leave the lights on longer than necessary when the hybrid system is off.

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CT200h_OM_OM76174U_(U)6-2. Using the interior lights
Turns the lights on/off
Turns the light on
Turns the door position on
*
*
: When the personal/interior light main switch is in the off position, the rear inte-
rior light will not turn on even if the door
is opened with the rear interior light
switch in door position.
●Illuminated entry system: The lights automati cally turn on/off according to power switch
mode, the presence of the electronic key, whether the doors are locked/unlocked, and
whether the doors are opened/closed.
●If the interior lights remain on when the power switch is turned off, the lights will go off
automatically after 20 minutes.
●Settings (e.g. the time elapsed before the lights turn off) can be changed.
(Customizable features: →P. 5 9 1 )
Front personal/interior lights
Rear interior light
1
2
NOTICE
To prevent 12-volt battery discharge, do not leave the lights on longer than necessary
when the hybrid system is off.

5608-2. Steps to take in an emergency
CT200h_OM_OM76174U_(U)
Depress the brake pedal.
Touch the Lexus emblem side of the
electronic key to the power switch.
If any of the doors is opened or closed
while the key is being touched to the
switch, an alarm will sound to indicate
that the start function cannot detect the
electronic key.
Press the power switch within 10 seconds of the buzzer sounding, keeping the
brake pedal depressed.
In the event that the hybrid system still cannot be operated, contact your Lexus
dealer.
■Stopping the hybrid system
Set the parking brake, shift the shift position to P and press the power switch as you nor-
mally do when stopping the hybrid system.
■Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the electronic
key battery be replaced immediately when the battery is depleted. ( →P. 5 0 2 )
■Changing power switch modes
Within 10 seconds of the buzzer sounding, release the brake pedal and press the power
switch.
The hybrid system does not start and mode s will be changed each time the switch is
pressed. ( →P. 1 5 7 )
Starting the hybrid system
1
2
WA R N I N G
■When using the mechanical key and operating the power windows
Operate the power window after checking to make sure that there is no possibility of
any passenger having any of their body parts caught in the window.
Also, do not allow children to operate the mech anical key. It is possible for children and
other passengers to get caught in power window.
3

5638-2. Steps to take in an emergency
CT200h_OM_OM76174U_(U)
8
When trouble arises
■Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
■To prevent 12-volt battery discharge
●Turn off the headlights and the audio sy stem while the hybrid system is off.
●Turn off any unnecessary electrical components when the vehicle is running at a low
speed for an extended period, such as in heavy traffic.
■When the 12-volt battery is removed or discharged
●The hybrid system may not start. (→P. 4 8 6 )
●If the 12-volt battery discharges while the shift position is in P, it may not be possible to
shift the shift position to other positions. In this case, the vehicle cannot be towed with-
out lifting both front wheels because the front wheels will be locked. ( →P. 5 2 2 )
●When the 12-volt battery is reconnected, start the hybrid system and confirm that the
shift position can be changed to each position using the shift position indicator.
●Make sure that the key is not inside the vehicle when recharging or replacing the 12-
volt battery. The key may be locked in the vehicle if the alarm is activated. ( →P. 7 5 )
■Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gradually even when the vehicle
is not in use, due to natural discharge and the draining effects of certain electrical appli-
ances. If the vehicle is left for a long time, the 12-volt battery may discharge, and the
hybrid system may be unable to start. (The 12-volt battery recharges automatically while
the hybrid system is operating.)
WA R N I N G
■Avoiding 12-volt battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flammable gas
that may be emitted from the 12-volt battery:
●Make sure each jumper cable is connected to the correct terminal and that it is not
unintentionally in contact with any other than the intended terminal.
●Do not allow the other end of the jumper cable connected to the “+” terminal to come
into contact with any other parts or metal surfaces in the area, such as brackets or
unpainted metal.
●Do not allow the + and - clamps of the jumper cables to come into contact with each
other.
●Do not smoke, use matches, cigarette lighters or allow open flame near the 12-volt
battery.